Patents by Inventor Yuji Oka

Yuji Oka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240130361
    Abstract: To provide an industrially and environmentally more preferable nonflammable liquid composition having a fluorine compound reduced, as compared to previously known nonflammable liquid compositions. A liquid composition is used, which includes a flammable liquid and a fluoroiodoalkane represented by the following formula (1): (in the formula, X each independently represents H or F, and n represents an integer of from 0 to 5), and which is characterized in that the total amount of the above-mentioned flammable liquid and the above-mentioned fluoroiodoalkane is from 95 to 100 wt % of the entire amount of the above-mentioned liquid composition.
    Type: Application
    Filed: January 20, 2022
    Publication date: April 25, 2024
    Applicant: TOSOH CORPORATION
    Inventors: Yuji OKA, Kosuke KAWABE, Takeshi KANBARA
  • Patent number: 9780310
    Abstract: A novel heterocyclic compound for an organic electroluminescent device excellent in long service life and light-emitting characteristics is provided. A cyclic azine compound has at least one substituent (substituent B) selected from a specific group.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: October 3, 2017
    Assignee: TOSOH CORPORATION
    Inventors: Yuji Oka, Nobumichi Arai, Yuuichi Miyashita, Tadahiro Yotsuya, Kana Fujita, Naoki Uchida, Keisuke Nomura, Tsuyoshi Tanaka
  • Publication number: 20160056388
    Abstract: A novel heterocyclic compound for an organic electroluminescent device excellent in long service life and light-emitting characteristics is provided. A cyclic azine compound has at least one substituent (substituent B) selected from a specific group.
    Type: Application
    Filed: April 18, 2014
    Publication date: February 25, 2016
    Applicant: TOSOH CORPORATION
    Inventors: Yuji OKA, Nobumichi ARAI, Yuuichi MIYASHITA, Tadahiro YOTSUYA, Kana FUJITA, Naoki UCHIDA, Keisuke NOMURA, Tsuyoshi TANAKA
  • Patent number: 9252368
    Abstract: A cyclic azine compound of formula (1): wherein, Y is C—H or a nitrogen atom, Ar1 is a C6-18 aromatic hydrocarbon group, which may be substituted with an C1-4 alkyl group or a phenyl group, Ar2 is a hydrogen atom, or a C6-18 aromatic hydrocarbon group, which may be substituted with a phenyl group or a pyridyl group, or is a nitrogen-containing condensed ring C9-15 aromatic group, Ar3 is a nitrogen-containing condensed ring C9-15 aromatic group, X is a phenylene group, and n is an integer in the range of 0-3. The cyclic azine compound is useful as a constituent of an organic electroluminescent device.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: February 2, 2016
    Assignees: TOSOH CORPORATION, SAGAMI CHEMICAL RESEARCH INSTITUTE
    Inventors: Hidenori Aihara, Yuji Oka, Keisuke Nomura, Tsuyoshi Tanaka, Naoki Uchida
  • Patent number: 8899149
    Abstract: A letterpress printing plate, made of a material having flexibility, includes a plurality of raised parts to applying ink to, the raised parts including a raised part for solid shade, and a buildup part formed at a backside position of the raised part for solid shade with respect to the printing plate.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: December 2, 2014
    Assignee: Sumita Company Ltd.
    Inventor: Yuji Oka
  • Publication number: 20140330013
    Abstract: A cyclic azine compound of formula (1): wherein, Y is C—H or a nitrogen atom, Ar1 is a C6-18 aromatic hydrocarbon group, which may be substituted with an C1-4 alkyl group or a phenyl group, Ar2 is a hydrogen atom, or a C6-18 aromatic hydrocarbon group, which may be substituted with a phenyl group or a pyridyl group, or is a nitrogen-containing condensed ring C9-15 aromatic group, Ar3 is a nitrogen-containing condensed ring C9-15 aromatic group, X is a phenylene group, and n is an integer in the range of 0-3. The cyclic azine compound is useful as a constituent of an organic electroluminescent device.
    Type: Application
    Filed: November 9, 2012
    Publication date: November 6, 2014
    Inventors: Hidenori Aihara, Yuji Oka, Keisuke Nomura, Tsuyoshi Tanaka, Naoki Uchida
  • Publication number: 20130103417
    Abstract: Provided is a medical care support system for the sharing and reusing of medical information on the basis of a workflow which is a flow of medical-related services. A workflow step that was executed prior to an ongoing workflow step is selected by using a medical information database which has registered a workflow and information of each workflow step in association with medical information; and information is inputted by medical staff in the ongoing workflow step while the medical information registered in the selected workflow step being referred to; and the medical information being referred to and the inputted information are registered in the medical information database in association with the ongoing workflow step.
    Type: Application
    Filed: June 24, 2011
    Publication date: April 25, 2013
    Applicant: Hitachi, Ltd.
    Inventors: Kumiko Seto, Kikuo Umegaki, Masayuki Ohta, Shuntaro Yui, Satoshi Mitsuyama, Kazuki Matsuzaki, Hajime Sasaki, Takuya Kamiyama, Hisaaki Ochi, Yoshihiko Nagamine, Yuji Oka
  • Patent number: 7754478
    Abstract: A device for cell culture capable of automatically performing operations for cell culture over several days to several months while minimizing the risk of contamination. A new medicine can be supplied to an incubator means by using a medicine supply means or unnecessary wastewater can be discharged from the incubator means by using a wastewater discharge means without taking out the incubator means disposed in heat insulation box means from a heat insulation box, and the state of the cell culture can be observed with the incubator means formed in the heat insulation box means. Accordingly, the outside air does not enter directly into the incubator means during culturing, and the risk of contamination is completely eliminated. As a result, the culturing operations can be automatically performed over a long period.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: July 13, 2010
    Assignee: Kaneka Corporation
    Inventors: Tsutomu Suzuki, Hiroshi Inomata, Yoshihiro Komori, Hiroshi Tachikui, Naruo Watanabe, Satoshi Ozawa, Yuji Oka, Minoru Ueda, Yasushi Nomura, Masako Nomura, legal representative, Isao Shindo
  • Publication number: 20090145316
    Abstract: A letterpress printing plate, made of a material having flexibility, includes a plurality of raised parts to applying ink to, the raised parts including a raised part for solid shade, and a buildup part formed at a backside position of the raised part for solid shade with respect to the printing plate.
    Type: Application
    Filed: May 27, 2008
    Publication date: June 11, 2009
    Applicant: Sumita Company Ltd.
    Inventor: Yuji Oka
  • Publication number: 20070148764
    Abstract: A device for cell culture capable of automatically performing operations for cell culture over several days to several months while minimizing the risk of contamination. A new medicine can be supplied to an incubator means by using a medicine supply means or unnecessary wastewater can be discharged from the incubator means by using a wastewater discharge means without taking out the incubator means disposed in heat insulation box means from a heat insulation box, and the state of the cell culture can be observed with the incubator means formed in the heat insulation box means. Accordingly, the outside air does not enter directly into the incubator means during culturing, and the risk of contamination is completely eliminated. As a result, the culturing operations can be automatically performed over a long period.
    Type: Application
    Filed: December 15, 2004
    Publication date: June 28, 2007
    Inventors: Tsutomu Suzuki, Hiroshi Inomata, Yoshihiro Komori, Hiroshi Tachikui, Naruo Watanabe, Satoshi Ozawa, Yuji Oka, Minoru Ueda, Yasushi Nomura, Isao Shindo, Masako Nomura
  • Patent number: 6201023
    Abstract: A method for protecting a crop against plant-parasitic nematode attack by inducing local and systemic resistance of the crop comprising the application of a composition containing an effective amount of &bgr;-amino butyric acid or derivatives thereof to the crop or its locus.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: March 13, 2001
    Assignee: Agrogene Ltd.
    Inventors: Yuji Oka, Yitzhak Spiegel, Yigal Cohen